User manual

DSO-1000D Series User Manual
106
Timeout
Triggers when the signal stays high, low or either
for a designated amount of time. The trigger level
determines when a signal is high or low.
A
B
C
A
Trigger level threshold
B
Timer
C
Triggering point
Trigger Parameter Overview
All the following parameters are common for all
the trigger types unless stated otherwise.
Trigger Source
CH1 ~ 4
Channel 1 ~ 4 input signals.
EXT
External trigger input
signal. Only available on 2
channel models.
EXT TRIG
AC Line
AC mains signal.
Alternate
Alternate between channel sources for
the trigger source.
EXT Probe
Probe trigger source. Set the probe as
either current or voltage.
Trigger Mode
Auto (un-
triggered
roll)
The DSO-1000D generates an internal
trigger if there is no trigger event, to
make sure waveforms are constantly
updated regardless of trigger events.
Select this mode especially when
viewing rolling waveforms at slower
timebases.